JPS59215177A - Transformer for deflecting electron beam - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION Technical Field The present invention relates to an electron beam deflection transformer that generates a voltage for focusing an electron beam in a picture tube of a television receiver and a high temperature deflection voltage. 1 on the winding form of 1
A secondary winding and several auxiliary windings are provided, and a high voltage winding that generates a high voltage is provided on a second winding form that is concentric with the first winding form. This relates to a transformer in which plastic is cast and fixed within the casing.

PRIOR ART Such transformers are already known under the concept of diode-split transformers. In that case, the transformer consists of a primary winding which generates various operating voltages using a number of auxiliary windings. The winding is then constructed in the form of an aluminum foil with an insulating sheet inserted in between. Welded to the tap point is a part of the conductor that protrudes beyond the edge of the foil transversely to the winding, and that part of the conductor is guided into the terminal plate at the axial end of the former. ing. Since the winding form to which the high voltage is applied is divided into a number of winding chambers, the winding is divided into a number of winding sections. A diode is connected between these parts, so that the partial windings are connected in series via the diodes. In conjunction with the winding capacitance, a very high voltage is tapped off, which voltage can be tapped off as a high voltage or focus voltage for the picture tube of a television receiver. Both formers are mounted coaxially in one casing, within which the formers are
It is installed with increased resistance to high pressure by filling it with epoxy resin. In this case, the filling compound is filled into the casing parallel to the axis of the former from the connection terminal side of the conductor.

The connection terminals for the high voltage and the concentrated voltage are guided through the opposing partitions of the housing.

In this case, the opening should be well sealed after the winding terminals are inserted and before filling with plastic. This requires additional work and means relatively high costs and material costs.

OBJECTS OF THE INVENTION The problem on which the invention is based is to reduce the volume and cost of transformers of the type mentioned above and to provide a transformer that is easy to manufacture.

According to the invention, the problem is solved by: - The casing has an opening in a plane parallel to the axis of the former, through which the second former casing is inserted and filled with plastic. and the electrical connection terminal of the winding provided on the winding form,
This is solved by embedding it in plastic and leading it out to the outside through an opening in the casing.

Description of examples The invention will now be explained with reference to illustrated embodiments.

1 shows a casing in which winding forms 2 and 3 are supported.

The winding form 2 has a primary winding and several auxiliary windings.
supports a high voltage winding which supplies the anode voltage, focusing voltage and screen grid voltage for the television picture tube. An opening 5 in the casing 1 is provided in a plane parallel to an axis 4 common to both formers 2 and 3.

The winding form 3 can be inserted through this opening 5. The winding form 3 is secured to a circular projection 8 provided on the side walls 6 and 7 of the casing 1 and coaxial with the axis 4. Since the side walls of the casing 1 are elastic, a sealing effect occurs, in which case the flange 9 of the former 3 and the 100-chamfered circular edge 1
1 and 12 are pressed against the protrusion 8.

The former 3 and its windings are locked in the casing 1 so that the plastic 13 can be filled through the opening 5. In this case, the plastic surrounds the high-voltage connection terminal 21 led out upwards. There is therefore no need for additional openings to be sealed for this high-voltage connection.

The former 2 for the primary winding is inserted coaxially with the axis 4 in the casing 1 through the opening 15 in the side wall 70 into the space not filled with plastic. The former 2 is supported on opposite side walls 6 of the casing 1 . Furthermore, U-shaped ferrite core 1
6 is inserted through the winding form 2, in which case the winding form 2 is inserted into the side wall 6
and 7 are held through openings 14 and 15 provided therein. The side walls 6 and 7 of the casing 1 held in the holding device during filling with plastic are stressed inwardly in the direction of the axis 4, so that the circular projections 8 provided on the casing walls cause the edges 11, and 12, a sealing effect is produced. This part is shown in FIG. 1 in an enlarged view. Connection terminals 17 and 18 for the focus voltage and the screen grid voltage are led out from the high-voltage winding on the former 3 through the plastic. The adjustment potentiometers 19 and 20 necessary for regulating these voltages are in this case advantageously constructed as a pluggable unit. The device described above can thereby be adapted to different types of picture tubes into which a corresponding potentiometer unit is inserted.

The device described above is advantageous in that the winding former 2 is replaceable, so that it can be fitted to suit the type of picture tube.

FIG. 2 shows a perspective view to supplement the description regarding FIG. 1 and to clarify the present invention.

[Brief explanation of drawings]

FIG. 1 is a schematic cross-sectional view of a transformer according to the present invention, and FIG. 2 is a schematic perspective view of the transformer according to the present invention. 1... Casing, 2, 3... Winding form, 6 H7...
・Side wall, 8...Protrusion, 13...Plastic, 16
... U-shaped ferrite core, 17, 18, 21 ... Connection terminal, 19, 20 ... Adjustment potentiometer Mönchwihrer Hebelstrasse, Federal Republic of Germany 17

Claims (1)

[Claims] 1. An electron beam deflection transformer that generates a voltage for focusing an electron beam in a picture tube of a television receiver and a high deflection voltage, the transformer having a primary winding on a first winding form. A high voltage winding that generates a high voltage is provided on a second winding form provided concentrically with the first winding form, and the high voltage winding is connected to the casing. In a transformer in which plastic is cast and fixed, the casing (1
) has an opening (5) in a plane parallel to the axis (4) of the winding form;
The second former (3) is passed through the opening into the casing (1).
) and filled with plastic (13), and the electrical connection terminal (21) of the winding provided on the winding form (3) is embedded in the plastic through the opening (5) in the casing. Externally. An electron beam deflection transformer characterized by: 2. Leave the first winding form (2) and the windings of said winding form uncast, and insert the second winding form (3) through the opening (15) provided in the side wall (7) of the casing. ) The electron beam deflection transformer according to claim 1, which is inserted concentrically into the electron beam deflection transformer. 6. Opening provided in the side wall of the casing (14°15
2. The transformer for electron beam deflection according to claim 1, wherein the transformer has a protrusion (8) protruding into the inside thereof, which locks and supports the second winding form (3) at the edge thereof. 4. A transformer for electron beam deflection according to claim 1, wherein the locking connection is sealed when filled with liquid plastic (13). 5 Connect the electrical connection terminals for the focused voltage and the screen grid voltage, which are taken out from the winding form (3), to the plastic (13
), and a potentiometer unit (19, 20) is inserted into the connection terminal.